diff --git a/lib/css-parser.js b/lib/css-parser.js
index 78407af..805e630 100644
--- a/lib/css-parser.js
+++ b/lib/css-parser.js
@@ -1,6 +1,6 @@
 var embeddedRegexp = /^data:(.*?),(.*?)/;
 var commentRegexp = /\/\*([\s\S]*?)\*\//g;
-var urlsRegexp = /((?:@import\s+)?url\s*\(\s*['"]?)(.*?)(['"]?\s*\))|(@import\s+['"]?)([^;'"]+)/ig;
+var urlsRegexp = /(?:@import\s+)?url\s*\(\s*(("(.*?)")|('(.*?)')|(.*?))\s*\)|(?:@import\s+)(("(.*?)")|('(.*?)')|(.*?))[\s;]/ig;
 
 function isEmbedded (src) {
 	return embeddedRegexp.test(src.trim());
@@ -13,8 +13,8 @@ function getUrls (text) {
 	text = text.replace(commentRegexp, '');
 
 	while (urlMatch = urlsRegexp.exec(text)) {
-		// Match 2 group if '[@import] url(path)', match 5 group if '@import path'
-		url = urlMatch[2] || urlMatch[5];
+		// Match 3, 5, 6 group if '[@import] url(path)', match 9, 11, 12 group if '@import path'
+		url = urlMatch[3] || urlMatch[5] || urlMatch[6] || urlMatch[9] || urlMatch[11] || urlMatch[12];
 
 		if (url && !isEmbedded(url) && urls.indexOf(url) === -1) {
 			urls.push(url);
diff --git a/test/css-parser-test.js b/test/css-parser-test.js
index 1e8d966..2599f72 100644
--- a/test/css-parser-test.js
+++ b/test/css-parser-test.js
@@ -82,6 +82,80 @@ describe('Parse css urls', function(){
 		urls.should.containEql(' a.css');
 	});
 
+	it('should handle urls without extension', function() {
+		var text = '.image { background: url("image-without-ext"); } ';
+		var urls = parseCssUrls(text);
+		urls.should.be.instanceof(Array).and.have.lengthOf(1);
+		urls.should.containEql('image-without-ext');
+	});
+
+	describe('quotes', function() {
+		it('should find url without quotes', function() {
+			var text = '.image { background: url(bg.jpg); } ';
+			var urls = parseCssUrls(text);
+			urls.should.be.instanceof(Array).and.have.lengthOf(1);
+			urls.should.containEql('bg.jpg');
+		});
+
+		it('should find url containing single quotes inside double quotes', function() {
+			var text = '.image { background: url("bg\'1.jpg"); }';
+			var urls = parseCssUrls(text);
+			urls.should.be.instanceof(Array).and.have.lengthOf(1);
+			urls.should.containEql('bg\'1.jpg');
+		});
+
+		it('should find url containing double quotes inside single quotes', function() {
+			var text = '.image { background: url(\'bg" 23\'); }';
+			var urls = parseCssUrls(text);
+			urls.should.be.instanceof(Array).and.have.lengthOf(1);
+			urls.should.containEql('bg" 23');
+		});
+
+		it('should find import without quotes', function() {
+			var text = '@import new.css;';
+			var urls = parseCssUrls(text);
+			urls.should.be.instanceof(Array).and.have.lengthOf(1);
+			urls.should.containEql('new.css');
+		});
+
+		it('should find import containing single quotes inside double quotes', function() {
+			var text = '@import "new\'11\'.css";';
+			var urls = parseCssUrls(text);
+			urls.should.be.instanceof(Array).and.have.lengthOf(1);
+			urls.should.containEql('new\'11\'.css');
+		});
+
+		it('should find import containing double quotes inside single quotes', function() {
+			var text = '@import \'new" _2_".css\';';
+			var urls = parseCssUrls(text);
+			urls.should.be.instanceof(Array).and.have.lengthOf(1);
+			urls.should.containEql('new" _2_".css');
+		});
+	});
+
+	describe('parentheses', function() {
+		it('should handle parentheses inside url in filename', function() {
+			var text = '.image { background: url("test (2).png"); } ';
+			var urls = parseCssUrls(text);
+			urls.should.be.instanceof(Array).and.have.lengthOf(1);
+			urls.should.containEql('test (2).png');
+		});
+
+		it('should handle parentheses inside url in extension', function() {
+			var text = '.image { background: url(\'test.png (2)\'); } ';
+			var urls = parseCssUrls(text);
+			urls.should.be.instanceof(Array).and.have.lengthOf(1);
+			urls.should.containEql('test.png (2)');
+		});
+
+		it('should handle parentheses inside @import', function() {
+			var text = '@import "import)).css" ';
+			var urls = parseCssUrls(text);
+			urls.should.be.instanceof(Array).and.have.lengthOf(1);
+			urls.should.containEql('import)).css');
+		});
+	});
+
 	describe('comments', function() {
 		it('should ignore comments and return empty array if there are only comments in text', function(){
 			var text = '\